Harman, I sympathise with you. I was a smoker for 20 years, found out I was pregnant, was overjoyed but continued to smoke albeit considerably less, until I was 5 months pg then I quit completely. Like Evita, I just thought about what I was doing to the tiny life inside me. Somehow at around 5 months, I took myself seriously about giving up.
Now I feel like such a fool that I smoked for all those years, even tho' I have the odd craving..it is such a complex addiction.
Someone who had read the Allen Carr book helped me by spelling out his argument. I never thought I could do it, and had I not got pregnant I would no doubt be puffing away still.
I am determined not to start again..I will reach for a sweet to suck or biscuit to nibble on rather than give in, I cannot allow myself to have even one as a social thing.
The best thing I found was to remove myself from smokers and smoker situations by and large...severe I know, and my smoker friends have not seen much of me but you have to do whatever it takes if you want to quit.
Good luck and you WILL do it!
We are all rooting for you.